How to look up Craftsman model number?
To look up your Craftsman model number for parts and diagrams, we recommend finding the model/serial tag on your riding mower first, then searching by that exact model number (for this tractor, it’s 917273323). On most Craftsman tractors, the tag is on the frame under the seat or on the underside of the seat.
Where to find the model and serial tag
Check these common locations on Craftsman riding mowers and lawn tractors:
- On the frame directly under the seat (lift the seat to view)
- On the underside of the seat pan
- Near the rear fender area close to the seat mounting points
- Occasionally on the frame rail near the engine compartment (less common)
How to use the model number once you find it
Use the model number exactly as printed (letters and numbers, no spaces added or removed).
- Search using the full model number (example: 917273323)
- Match the model number first; then confirm the part by name and diagram location
- If you are replacing a worn fastener or wheel hardware, match the part by application (front axle, steering, deck, etc.)
Quick example: model number vs. part identifiers
| What you have | Example | What it’s used for |
|---|---|---|
| Model number | 917273323 | Finds the correct parts diagrams for your tractor |
| Part ID | 532140403 | Identifies a specific replacement part listing |
| Part number | 140403 | Manufacturer’s number used across brands/models |
Why it matters
Craftsman tractors often look similar across years, but parts like belts, steering components, and electrical switches can vary by model. Using the exact model number helps ensure the parts you order fit your mower the first time.
Helpful related part example
If your key is missing or damaged, a common match for this model is the molded ignition key 532140403.
Last updated: January 2026
Is it worth replacing a lawn mower engine?
Yes, it’s worth replacing the engine on a Craftsman front-engine lawn tractor model 917273323 when the tractor’s chassis, mower deck, steering, and transmission are still solid and the total engine swap cost stays well below the cost of a comparable replacement tractor (a common cutoff is about 50% of replacement cost).
Quick decision checklist
- Replace the engine if the deck shell is straight (no cracks/rot) and spindles turn smoothly.
- Replace the engine if the transmission drives consistently (no slipping, no loud whining).
- Replace the engine if the steering is tight enough to track straight (no severe play).
- Replace the engine if you can do basic wrenching and have a safe place to work.
- Replace the tractor instead if the frame/deck is failing or multiple major systems need work.
What to price out before you decide
Engine replacement is rarely “just the engine.” We recommend pricing these items together so you don’t get surprised mid-project:
| Cost item | What it covers | Typical note |
|---|---|---|
| Engine or short block | Main repair | Short block can be a good middle-ground if accessories are reusable |
| Belts and pulleys | Drive and deck wear items | A worn belt can mimic power loss or poor drive |
| Fuel system refresh | Old fuel issues | Tank, lines, and fittings matter if fuel is stale or leaking |
| Electrical start/safety | No-crank problems | Switches, key, and harness issues can look like “bad engine” |
If you’re already replacing a worn ground drive belt, the lawn tractor ground drive belt, 1/2 x 84-1/2-in 532140218 is one example of a common wear part to include in your estimate.
Why it matters
A new engine can restore reliability and starting performance, but it won’t fix underlying deck, drive, or electrical problems. Confirming the tractor’s “platform” is healthy first keeps you from putting a new engine onto a mower that still won’t cut or drive correctly.
Practical tips to avoid a wasted engine swap
- Verify the engine actually failed (compression loss, thrown rod, seized crank) versus a no-start issue.
- If it cranks but won’t start, troubleshoot fuel and spark first.
- If it only clicks or won’t crank, check battery, cables, solenoid, and safety interlocks.
- If it dies when you release the brake, check the operator presence and brake switch circuits.
For step-by-step troubleshooting, use riding lawn mower engine spins but wont start video and riding lawn mower engine clicks but doesnt turn over video.
Last updated: January 2026
What year was Craftsman 917273323 made?
Craftsman model 917273323 was produced in the mid-2000s, most commonly around 2004 to 2006. Craftsman riding mower model numbers in the 917-series were built across multiple years, so the exact build year is best confirmed from the tractor’s ID label.
How to confirm the exact year on your 917273323
Use the tractor’s product identification label (usually under the seat, on the frame near the rear fender, or near the engine compartment). Look for a manufacture date or a serial number/date code.
- Check under the seat pan and rear fender area first
- Wipe the label clean and take a photo before it fades further
- Record the full model number and serial number exactly as shown
- If the label is missing, check the frame rail and the underside of the hood
- Match your findings to the correct replacement parts for 917273323
Why the year matters for parts and repairs
Even within the same Craftsman model number family, small running changes can affect fitment for steering, deck, and electrical parts.
Common examples where year or serial range matters:
- Ignition and wiring harness routing
- PTO engagement style and switch connector type
- Deck idler and mandrel pulley revisions
- Steering linkage geometry
Quick reference: what to use when ordering parts
| What you have | What it helps us match | Where to find it |
|---|---|---|
| Model number (917273323) | Correct parts diagrams and assemblies | ID label on tractor |
| Serial number/date code | Exact production run and revisions | Same ID label |
| Part ID from the diagram | Exact replacement part listing | Parts list/diagram |
If you’re troubleshooting starting or cranking issues while identifying the tractor, use our DIY video guide: riding lawn mower engine clicks but doesnt turn over video.
Last updated: January 2026
What engine does Craftsman riding mower use?
For Craftsman model 917273323 (front-engine lawn tractor), the engine varies by the exact build and engine family installed on the tractor; the most reliable way to identify it is by reading the engine ID label on the engine itself and matching that information when ordering parts.
How to identify the engine on model 917273323
Use the engine’s identification tag, not the tractor hood decal.
- Lift the hood and look for a sticker or metal tag on the engine shroud, valve cover, or blower housing
- Record the engine brand (commonly Briggs & Stratton, Kohler, or Tecumseh on tractors of this era)
- Record the engine model, type, and code (or spec number)
- Use those numbers to match the correct tune-up and fuel system parts
- If the tag is missing, compare the carburetor, air filter housing, and muffler layout to parts diagrams for your tractor
Quick checks that help confirm you have the right engine
These checks narrow down the engine family before you buy ignition or fuel parts.
| What you check | What it tells you | Where to look |
|---|---|---|
| Engine ID label | Exact engine model/type/code | Engine shroud or valve cover |
| Spark plug lead count | Single-cylinder vs twin-cylinder | Top/side of engine |
| Fuel tank routing | Hose layout and grommet style | Tank outlet to carburetor |
| Throttle/choke control style | Linkage and control compatibility | Dash controls to carb linkage |
Why it matters
The tractor model number (917273323) identifies the chassis and mower deck, but engine parts (carburetor, air filter, starter, ignition coil) must match the engine’s model/type/code. Using the engine ID prevents wrong-part returns and starting or running problems.
Parts that are often involved when diagnosing engine issues
If you are troubleshooting a no-start or intermittent start, these model-related parts commonly get checked or replaced:
- Molded ignition key 532140403 (worn key can cause poor switch contact)
- Lawn tractor ignition harness 532170238 (loose or corroded connections can interrupt spark)
- Red.pto.swtc 582107601 (a faulty PTO switch can affect safety interlock operation)
For step-by-step help when the starter clicks or the engine will not crank, use riding lawn mower engine clicks but doesnt turn over video.
Last updated: January 2026
